2 Echin. 
XIV. ECHINODERMA, 
iii Secondary Sexual Characters: — 
a. Differences of Form or Structure 
b. Differences of colour . 
c. Protection of young . 
c. Physiology : — 
i General . . . . . 
ii Circulation 
iii Respiration ..... 
iv Alimentation and Digestion 
v Excretion and its Products 
vi Sensation 
vii Miscellanea and Experimental . 
D. Bionomics : — 
i General Accounts 
ii Special habits 
iii Habitat (in Classes a — h, as under IV) . 
iv Feeding (ditto) (ditto) 
v Defence and Protection, (a. Active, b. Con- 
cealment. c. Protective coloration, d. Other 
protective adaptations) .... 
vi Locomotion 
vii Autotomy and Regeneration (in Classes a — h, as 
under IV) 
viii Parasites and Commensals (ditto) (ditto) . 
ix Echinoderms as Food 
x Echinoderms in Geological Aspect . 
E. Miscellaneous : — 
i Research and Instruction (a. Preservation, b. 
Methods of research, c. Museum exhibits 
and Collections, d. Instruction) 
ii Economics 
iii Bibliography 
iv Historical, Popular notions, &c. 
F. Auxology : — 
i General principles .... 
ii General accounts .... 
iii Formation of Gonads 
iv Oviposition, Fertilisation, Segmentation 
v Larval stages 
vi Organogeny, 1-12 , as under II, b, i . 
vii Post-larval growth-stages . 
viii Developmental mechanics and Experimental 
Embryology ....... 
(Under each of the above a — h indicate Classes as 
under IV.) 
111. — Distribution. 
a. Geographical : — 
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i 
General ...... 
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ii 
Atlantic Ocean and adjacent Seas . 
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iii 
Indian Ocean and adjacent Seas 
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iv 
Pacific Ocean and adjacent Seas 
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V 
Arctic Ocean and adjacent Seas 
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vi 
Antarctic Ocean and adjacent Seas . 
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